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Fortinet FortiMail vs Mimecast Email Security comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Apr 20, 2025

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

ROI

Sentiment score
7.1
Fortinet FortiMail enhances email safety, reduces costs, and improves efficiency, earning user trust with its cost-effective features.
Sentiment score
6.6
Mimecast Email Security effectively prevents phishing, enhancing security and providing significant protection despite challenges in quantifying ROI.
It offers cost savings compared to Cisco, which was very expensive.
There is definitely a return on investment when using Mimecast, as it blocks phishing emails, reducing the risk of significant financial losses.
 

Customer Service

Sentiment score
6.3
Fortinet FortiMail's technical support is highly rated for quick, expert assistance, though some entry-level issues exist.
Sentiment score
5.8
Mimecast Email Security's customer service is mixed, with responsiveness praised by some, but issues with waiting times noted by others.
I have direct communication with Kenyan system engineers and local support in Ethiopia, enabling good support.
Fortinet's technical support offers high-quality support.
Support personnel are hesitant to engage in remote sessions, preferring to share documentation via email.
Mimecast technical support is generally quite good.
 

Scalability Issues

Sentiment score
7.2
Fortinet FortiMail is scalable, effective for medium to enterprise businesses, but faces hardware and licensing limitations.
Sentiment score
7.2
Mimecast Email Security is a scalable SaaS solution, praised for flexibility and effectiveness across various organization sizes and industries.
 

Stability Issues

Sentiment score
8.3
Fortinet FortiMail is stable and reliable, offering strong performance, seamless integration, and high user satisfaction with minimal issues.
Sentiment score
7.5
Mimecast Email Security is generally stable and reliable, with rare bugs, occasional minor issues, and minimal downtime reported.
This stability is consistent across Fortinet products, including FortiGate firewall.
 

Room For Improvement

Fortinet FortiMail requires improvements in management, cost, integration, reporting, setup, documentation, content security, and user interface.
Mimecast Email Security requires pricing, detection, user interface improvements, better support, and enhanced AI integration for smoother operations.
The transition from on-premises devices to virtual appliances may be necessary as more organizations migrate email services to the cloud.
Providing comprehensive documentation on how to deploy and configure would improve the solution.
The area that could use some improvement in Fortinet FortiMail is the integration process.
A lot of emails were missed despite being known samples.
We discussed the phishing aspect, the DNS system, and the key rotation.
 

Setup Cost

Fortinet FortiMail pricing is capacity-based, seen as cost-effective by some, yet expensive due to features and stability.
Mimecast Email Security offers comprehensive features but is considered premium, with variable pricing flexibility and additional support costs.
Fortinet FortiMail is considered overpriced by Indian rupee standards.
The pricing is higher for Mimecast, particularly for the Indian market, where it is considered expensive.
 

Valuable Features

Fortinet FortiMail offers user-friendly, scalable email security with anti-spam, antivirus, phishing protection, and seamless Fortinet product integration.
Mimecast Email Security offers strong threat protection, seamless Microsoft 365 integration, and user-friendly features for comprehensive email threat mitigation.
Its threat detection capabilities have been beneficial.
The most valuable features are Fortinet FortiMail's ability to protect from advanced features of email-based attacks, including protection against ransomware and malware attacks.
Fortinet FortiMail offers capabilities like settings for mail delivery, mail filtering, spam controls, and email bursting prevention.
A distinct advantage of Mimecast is its ability to block phishing and impostor attacks, which are significant threats currently.
One of the most useful features is the threat remediation module, which can be used to remove malicious emails that may have been delivered or manually remove them.
 

Categories and Ranking

Fortinet FortiMail
Average Rating
8.6
Reviews Sentiment
6.9
Number of Reviews
65
Ranking in other categories
Email Security (7th)
Mimecast Email Security
Average Rating
8.0
Reviews Sentiment
6.2
Number of Reviews
31
Ranking in other categories
Office 365 Protection (3rd), Secure Email Gateway (SEG) (4th)
 

Mindshare comparison

While both are Messaging and Collaboration solutions, they serve different purposes. Fortinet FortiMail is designed for Email Security and holds a mindshare of 4.6%, down 6.0% compared to last year.
Mimecast Email Security, on the other hand, focuses on Secure Email Gateway (SEG), holds 11.9% mindshare, down 15.8% since last year.
Email Security
Secure Email Gateway (SEG)
 

Featured Reviews

MOHAN SUKUMAR - PeerSpot reviewer
Secure email management improves through advanced filtering and dynamic virus scanning
Fortinet FortiMail offers capabilities like settings for mail delivery, mail filtering, spam controls, and email bursting prevention. It also allows for email forwarding, dynamic filtering, and scanning based on virus signatures. I can set varying levels of security. The tool is flexible and provides essential features for mail security and management.
ShaheenKapery - PeerSpot reviewer
Provides valuable security features and has a straightforward setup process
The initial setup process is straightforward and takes a weekend at most. A .com domain can take up to forty-eight hours, while a local domain takes about four to eight hours because it has to propagate through the international DNS records. It is a cloud-only solution. If you're managing email security on-premises, you use your bandwidth to download emails, including spam, and then use your servers to clean it up. For example, say a third of your email is spam; this consumes significant bandwidth and resources. However, if you use Mimecast, they filter the emails on their servers before delivering them to you. It can be a major selling point in regions with expensive bandwidth, such as Africa. You can save bandwidth and improve overall efficiency by offloading the spam filtering to Mimecast.
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Top Industries

By visitors reading reviews
Educational Organization
13%
Computer Software Company
13%
Financial Services Firm
9%
Government
6%
Computer Software Company
15%
Financial Services Firm
8%
Manufacturing Company
7%
Comms Service Provider
5%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

What is your experience regarding pricing and costs for Fortinet FortiMail?
Fortinet FortiMail is considered overpriced by Indian rupee standards. My organization is not profit-making, and academic pricing is required, but it may not be available for security products like...
What needs improvement with Fortinet FortiMail?
Fortinet FortiMail should keep pace with features offered by cloud-based services like Google and Microsoft Outlook. Additionally, the transition from on-premises devices to virtual appliances may ...
What do you like most about Mimecast Email Security with Targeted Threat Protection?
The interface of this solution is very easy to navigate and user-friendly. There is no delivery in email and other communications, making it reliable. The configuration is relatively easy.
What needs improvement with Mimecast Email Security with Targeted Threat Protection?
If I ask you about the room for improvement, we discussed the phishing aspect, the DNS system, and the key rotation. Apart from that, are there any other areas that you would like to see improved o...
 

Also Known As

FortiMail
Mimecast Email Security with Targeted Threat Protection
 

Overview

 

Sample Customers

Magromer Cueros y Pieles S.A.
Azizi Developments, Affinity Credit Union, Aftercare, Al Abbar Group
Find out what your peers are saying about Fortinet FortiMail vs. Mimecast Email Security and other solutions. Updated: January 2024.
861,524 professionals have used our research since 2012.